Dims: 2.4" x 1.6" x 0.8" (6.1 x 4.1 x 2.0 cm)
Wt: 1.47 oz. (41.6 g)
N'Chwaning Mine, Hotazel, Kuruman, South Africa
Several bright yellow Sturmanite crystals rest on the host rock of this specimen. They have the standard hexagonal prismatic form of their kind, and though their form is not perfect, it is still definite, and only one of the crystals shows any serious damage. The largest of these crystals measures 0.4 x 0.6 x 0.5" and has probably the best form of the cluster. All have a vitreous luster on their prism faces and a pearly luster on their termination faces, and have an internally fractured but transparent coating around a translucent core. The host rock on which the Sturmanites rest is difficult to identify, but contains many tiny, colorless, transparent hexagonal crystals. They seem to be quartz crystals, but they have a few oddities in their structure that make me doubt just a little bit.